/* ==========================================================================
   ChromeTrack - Main CSS
   Core styles: variables, reset, typography, utilities
   ========================================================================== */

/* --------------------------------------------------------------------------
   CSS Custom Properties
   -------------------------------------------------------------------------- */
:root {
    /* Colors */
    --primary: #0066FF;
    --primary-dark: #0052CC;
    --secondary: #00C48C;
    --dark: #0A1628;
    --dark-blue: #1A2B4A;
    --medium: #3A4F6F;
    --light: #F5F8FC;
    --white: #FFFFFF;
    --accent: #FF6B35;

    /* Typography */
    --font-primary: 'Outfit', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-body: 'DM Sans', -apple-system, BlinkMacSystemFont, sans-serif;

    /* Spacing */
    --spacing-xs: 8px;
    --spacing-sm: 16px;
    --spacing-md: 24px;
    --spacing-lg: 40px;
    --spacing-xl: 60px;
    --spacing-2xl: 80px;

    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-full: 9999px;

    /* Shadows */
    --shadow-sm: 0 4px 12px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 8px 20px rgba(0, 102, 255, 0.15);
    --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.15);

    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
}

/* --------------------------------------------------------------------------
   Reset / Normalize
   -------------------------------------------------------------------------- */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    color: var(--dark);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

a {
    color: inherit;
    text-decoration: none;
}

ul, ol {
    list-style: none;
}

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

/* --------------------------------------------------------------------------
   Typography
   -------------------------------------------------------------------------- */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-primary);
    font-weight: 700;
    line-height: 1.2;
    color: var(--dark);
}

h1 {
    font-size: 56px;
    font-weight: 800;
    letter-spacing: -1px;
}

h2 {
    font-size: 42px;
    letter-spacing: -0.5px;
}

h3 {
    font-size: 24px;
}

h4 {
    font-size: 20px;
}

p {
    margin-bottom: 1em;
}

p:last-child {
    margin-bottom: 0;
}

/* --------------------------------------------------------------------------
   Utilities
   -------------------------------------------------------------------------- */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.text-center {
    text-align: center;
}

.text-primary {
    color: var(--primary);
}

.text-secondary {
    color: var(--secondary);
}

.text-medium {
    color: var(--medium);
}

.text-white {
    color: var(--white);
}

/* Visually hidden but accessible */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* --------------------------------------------------------------------------
   Animations
   -------------------------------------------------------------------------- */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideDown {
    from {
        transform: translateY(-100%);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

/* --------------------------------------------------------------------------
   Responsive Typography
   -------------------------------------------------------------------------- */
@media (max-width: 968px) {
    h1 {
        font-size: 42px;
    }

    h2 {
        font-size: 32px;
    }

    h3 {
        font-size: 20px;
    }
}

@media (max-width: 480px) {
    h1 {
        font-size: 32px;
    }

    h2 {
        font-size: 26px;
    }
}